Valerie Thomas began her career at NASA as a data analyst, immediately after graduating from Morgan State University. Her initial role involved analyzing computer performance data, which provided her with a foundational understanding of NASA's operations and technological infrastructure.

During her early years at NASA, Thomas played a crucial role in developing real-time computer data systems. These systems were vital for supporting various NASA programs, contributing to the agency's ability to process and analyze data more efficiently.

Thomas became the project manager for NASA's Landsat program, responsible for overseeing the team that analyzed images from the Landsat satellite. These satellite images were used for environmental monitoring and mapping, contributing significantly to our understanding of Earth's resources and changes.

A pivotal moment occurred when Valerie Thomas attended a science exhibition featuring illusions that used concave mirrors. Inspired by the way these mirrors created three-dimensional images, she began to explore the possibilities of using curved mirrors in technology.

Thomas's research and experimentation led to the invention of the illusion transmitter, a device that uses curved mirrors to create optical illusions. She received a patent for her invention in 1980. This technology has potential applications in medicine (creating 3D images of organs), television, and other areas.

Throughout her career at NASA, Valerie Thomas remained involved in various aspects of image processing and data analysis. She worked on projects that improved the quality and resolution of satellite images, contributing to advancements in remote sensing and environmental monitoring.

After a distinguished career of over 30 years, Valerie Thomas retired from NASA, leaving behind a legacy of innovation and significant contributions to space exploration and technology.